Removed zero address check on _numberMinted

[BenSparksCode]

There is already a zero address check on mint, so you can safely check the zero address via this view function - it should always return zero.

[Vectorized]

Nice find! Love it. 🧠

[ahbanavi]

Should we consider removing BurnedQueryForZeroAddress or AuxQueryForZeroAddress too?

[Vectorized]

Should we consider removing BurnedQueryForZeroAddress or AuxQueryForZeroAddress too?

@ahbanavi Yes. Wow, you can read my mind.

When removing the other checks, do also remove the relevant tests too.

balanceOf still needs the check due to the ERC721 standard.

[Vectorized]

Going to merge this after #165.

@ahbanavi We can make a separate PR for the other removals instead.

[ahbanavi]

@Vectorized Other removals can wait for another PR.
But IMO, this line should also be removed in this one:

ERC721A/contracts/ERC721A.sol

Line 20 in 2fc1218

error MintedQueryForZeroAddress();

[BenSparksCode]

@ahbanavi @Vectorized done :)